Process for manufacture of solvent for coal liquefaction

摘要

A solvent useful in coal liquefaction is obtained by separating the heavy liquid resulting from coal liquefaction into a fraction boiling at temperatures of between 200 DEG to 210 DEG C., a fraction boiling at temperatures between 211 DEG to 250 DEG C., and a fraction boiling at not less than 250 DEG C., subjecting the fraction boiling at between 211 DEG C. to 250 DEG C. to two hydrogenation treatments, mixing the hydrogenated product with the fraction boiling at between 200 DEG to 210 DEG C. which optionally has been hydrogenated to form a resultant mixture and mixing a portion of the resultant mixture with the fraction boiling at not less than 250 DEG C. which has been optionally hydrogenated.